---
id: CVE-2026-55072
title: Pimcore is an Open Source Data & Experience Management Platform
summary: >-
  Pimcore is an Open Source Data & Experience Management Platform. Prior to
  2026.1.5, an authenticated user with the objects permission can submit a
  malicious ClassDefinition UID because the name and ID validation expressions
  in models/Dat…
severity: high
cvss: 8.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N'
cwe:
  - CWE-20
  - CWE-89
vendor: pimcore
product: pimcore
affected:
  - pimcore < 2026.1.5
patched:
  - pimcore/pimcore 2026.1.5
  - pimcore/pimcore 12.3.9
published: '2026-09-14'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T13:42:48.283'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55072'
references:
  - url: >-
      https://github.com/pimcore/pimcore/commit/33a0e1887e1e31b4283b016ac5440c35ea5697b4
    label: security-advisories@github.com
  - url: 'https://github.com/pimcore/pimcore/pull/19177'
    label: security-advisories@github.com
  - url: 'https://github.com/pimcore/pimcore/releases/tag/v2026.1.5'
    label: security-advisories@github.com
  - url: 'https://github.com/pimcore/pimcore/security/advisories/GHSA-2mhj-fhvg-v428'
    label: security-advisories@github.com
  - url: 'https://github.com/pimcore/pimcore/security/advisories/GHSA-2mhj-fhvg-v428'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-2mhj-fhvg-v428'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - composer
epss: 0.00372
epssPercentile: 0.31066
aliases:
  - GHSA-2mhj-fhvg-v428
ecosystem: composer
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T17:17:33.891436Z'
ingestedAt: '2026-08-13T14:03:33.715Z'
---

## Overview

Pimcore is an Open Source Data & Experience Management Platform. Prior to 2026.1.5, an authenticated user with the objects permission can submit a malicious ClassDefinition UID because the name and ID validation expressions in models/DataObject/ClassDefinition.php validate only the beginning of each value. When a data object of that class containing a Block field is loaded, Block::load in models/DataObject/ClassDefinition/Data/Block.php incorporates the stored class ID into an unquoted object table identifier, allowing the UID to supply SQL syntax. The resulting query can read or modify arbitrary Pimcore database tables, including disclosure of password hashes, and the flaw represents an incomplete validation hardening because earlier work added a start anchor without enforcing the end of the identifier. This issue is fixed in version 2026.1.5.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-55072)

Affected packages:

- `pimcore/pimcore >= 2026.1.0, <= 2026.1.4`
- `pimcore/pimcore < 12.3.9`

Patched in:

- `pimcore/pimcore 2026.1.5`
- `pimcore/pimcore 12.3.9`

Source: https://github.com/advisories/GHSA-2mhj-fhvg-v428